Save your game, push CTRL, SHIFT, C, in that order. then enter move_objects on Into the text box in the left top corner, then press ENTER. Then go into buy mode, press P on your keyboard, Delete your people, go into live mode (Which should be paused) And click on the person you deleted avatar and they should appear!

They will be happy and their mood things will be up to the top. (Do it before going to work, For quick promotions.)